CN102625215A - Piezoelectric plane horn - Google Patents
Piezoelectric plane horn Download PDFInfo
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- CN102625215A CN102625215A CN2011101431171A CN201110143117A CN102625215A CN 102625215 A CN102625215 A CN 102625215A CN 2011101431171 A CN2011101431171 A CN 2011101431171A CN 201110143117 A CN201110143117 A CN 201110143117A CN 102625215 A CN102625215 A CN 102625215A
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Abstract
The invention discloses a piezoelectric plane loudspeaker, which comprises a frame, a piezoelectric actuator and a vibration generation diaphragm arranged in a hollow group space of the frame; the other two sides of the vibration generating diaphragm are in a spaced relation with the frame; the piezoelectric actuators formed by the plurality of bimodal piezoelectric sheets are mainly fixed on two sides of the vibration generation diaphragm, and the vibration generation diaphragm generates high-sound-pressure sound through high deformation of the bimodal piezoelectric sheets; the bimodal piezoelectric sheets in the piezoelectric actuator can be independently driven by a driving circuit and are matched with phase control of driving voltages of different bimodal piezoelectric sheets to adjust the vibration behavior of the vibration generation diaphragm, reduce the resonance phenomenon of the vibration generation diaphragm and enable the vibration generation diaphragm to generate flatter audio response characteristics. The piezoelectric plane horn can be applied to electric appliances such as a sound box, a television, a computer and the like, and is positioned in an installation space preset by the electric appliances by utilizing the frame set.
Description
Technical field
The present invention relates to a kind of piezoelectricity plane loudspeaker; Relate in particular to a kind of piezo-activator that uses most bimodal piezoelectric patches to be formed; Make it be fixed on the framework and the diaphragm sounding takes place to drive vibration; And then through bimodal piezoelectric patches driving voltage polarity adjustment vibration generation diaphragm covibration; Make it can produce the sound that has wide range and high sound press concurrently, reach the innovative design that preferable plane loudspeaker product is used.
Background technology
Press, the vibration that object produces audio frequency is the basis of sound generating, and loudspeaker generally comprise vibration generation diaphragm two parts of vibrative actuator of energising and drive air vibration output sound.Along with the lightening development trend of electronic product, loudspeaker also move towards slimming gradually, and the demand of plane loudspeaker increases along with electronic product market fast.Traditional loudspeaker are main with moving-coil type; Owing to be subject to the leakage field of field circuit, so that the moving-coil type loudspeaker can't satisfy the slimming product, so how to guarantee the tonequality of music; Can have enough thinnesses again concurrently in order to being built in the electronic product, become the technical development emphasis of new loudspeaker product then.
Piezoelectric loudspeaker uses piezoelectric patches as actuator, via the sheet metal that coheres on the actuator, becomes mode of flexural vibration to produce sound with drive air the actuator vibration MODAL TRANSFORMATION OF A.The material fluid-tight engagement that piezoelectric loudspeaker is essentially two sheets forms, and slim its key character that turns to has relative application advantage to the thin type horn of present electronic product demand.Piezoelectric loudspeaker uses the higher sheet metal of rigidity as vibration diaphragm to take place, and is unfavorable for the sound generating of low range, and therefore tradition uses piezoelectricity to exist as the problem that loudspeaker have high pitchization.Except that the demand of slimming, low range improves and how whole range is widened, and is the important technology problem of follow-up piezoelectric loudspeaker technical development in fact.
With regard to the related prior art data; See through diaphragm takes place in vibration design with the technology of metal-clad on low rigid macromolecule film by patent JP3207199, JP3143198 is open or the use of viscoelastic body by the open or low rigidity vibration of patent JP2000201399 diaphragm is taken place and cooperates central support structure open by patent JP2228199, JP2033300; Though it can improve the response of low range; Right gross thickness increase makes tonequality still be partial to high range, and its sound press also can reduce and reduce along with the diaphragm material rigidity takes place in vibration; In addition, sandwich the material that can absorb high pitch that the technology of diaphragm takes place is open by patent WO2007136162 to form the sandwich construction vibration by intermetallic, though this case can be improved low range part, and right its structure too complex and cause cost higher still.Disclose a kind of use resiliency supported mode for another patent JP200217195, JP2005295339 and the low range vibration of diaphragm has taken place to increase vibration; Improve lead simultaneously the technology of pressing diaphragm stress is taken place in vibration, so the complexity of this two cases structure is still higher and be unfavorable for the reduction of product cost; Disclose a kind of oval actuator for another patent JP3175800 and with vibration diaphragm structure has taken place, cooperated the macromolecule vibration that the existing technology that diaphragm uses takes place, though it can obtain bass domain response extension effect, it is higher so to make degree of difficulty.In addition, diaphragm takes place in the on-plane surface vibration that patent JP7203591, JP2551813, US6831985, JP2000333295 disclose the tool distinctive appearance, to improve the technology that the diaphragm equivalent area takes place in vibration; And patent JP8088898, JP2007194789 disclosed be the technology of actuator with the multiple material of on-plane surface piezoelectricity, though all can improve the voice response of low range, all have the complicated problem that reduces with sound press of structure fabrication.
Widen under the demand condition at whole range, the acoustic frequency response of loudspeaker has the scope of broad, and the sound press of each frequency also must maintain enough close state, and is excessive to avoid high bass to rise and fall.Improve the effect of hanging down range to using the macromolecule vibration that diaphragm takes place, a little less than the response relatively to high range.The high rigid particles of interpolation in macromolecule is disclosed like patent JP3082299; To improve the not enough problem of high pitch domain response; Or the sheet metal that makes the apparatus loose structure disclosed like patent JP8084396; To reduce metal sheet rigidity and then to improve sound press, so this type uses similar composite material to make the convention piezoelectric loudspeaker that diaphragm takes place in vibration, all still has the phenomenon and the shortcoming of insufficient bandwidth.
Disclose for another patent JP2001285994, US2010158283 and to have used attenuating material (damper) with absorbed oscillation; Suppress than large amplitude with what will resonate and produce; The resonance phenomena that reduces vibration generation diaphragm is to reach the effect that whole range is widened, and so still there is the high problem of complexity in the design of its similar sandwich construction.And for example patent JP2279000, JP3139999, US5828768, JP3589873, JP2003102094 disclose the existing cavity of cooperation electronic product; Directly piezo-activator is incorporated on the chamber wall wherein; The audio amplifier that sees through cavity is done in order to the wide deficiency of compensating band; Right because chamber wall is thicker, and the Oscillation Amplitude of its generation is limited, therefore the sound press of output is on the low side relatively.
Comprehensive above-mentioned known techniques, like the piezoelectricity plane loudspeaker that simpler structure fabrication how goes out to have bass domain response and wide range bandwidth, reality is a low-cost piezoelectricity plane loudspeaker development in future emphasis.
In view of this, the inventor this in manufacturing development and the design experiences of being engaged in Related product for many years, to above-mentioned target, in detail after design and the scrupulous assessment, eventually the present invention of a true tool practicality.
Summary of the invention
Main purpose of the present invention: a kind of piezoelectricity plane loudspeaker are provided, the problem points that its desire solves: to how developing a kind of new-type piezoelectricity plane loudspeaker that have more desirable practicality is that target is thought breakthrough;
The technical characterstic that the present invention deals with problems is that mainly these piezoelectricity plane loudspeaker comprise: a framework, comprise at least two side frame members, and said side frame member surrounds a frame and encloses kenel, and a permeable type group that is formed at these side frame members central authorities is established the space; Piezo-activator, settings are positioned at relative two side frame members of this framework, and respectively this piezo-activator comprises at least two bimodal piezoelectric patches, said bimodal piezoelectric patches arranged spaced; Diaphragm takes place in one vibration, is located at the permeable type group of this framework and establishes in the space, and relative two sides of this vibration generation diaphragm combine to be fixed in the bimodal piezoelectric patches of this piezo-activator, then are spaced relationship between relative two sides in addition of this vibration generation diaphragm and the framework; Innovate unique design by this, make the present invention contrast prior art, roughly can reach following advantage:
The piezo-activator that can utilize this majority bimodal piezoelectric patches to be constituted is fixed in vibration the diaphragm both sides takes place, and the high deflection that sees through the bimodal piezoelectric patches makes vibration that the sound that diaphragm produces high sound press take place; Bimodal piezoelectric patches in the piezo-activator can be by the drive circuit individual drive; The phase control that cooperates different bimodal piezoelectric patches driving voltages; The vibration behavior of diaphragm takes place with the adjustment vibration; Reduce the covibration that diaphragm takes place in vibration, make vibration that diaphragm take place and produce more smooth acoustic frequency response characteristic.
Further; This two side that spaced relationship takes place to be between diaphragm and framework for this vibration can further see through soft elastic material and be connected with framework; Can reduce framework by this strangulation effect that diaphragm produces is taken place in vibration, avoid vibrating the limited problem that causes sound press to reduce of diaphragm amplitude that takes place; Global design can make the plane loudspeaker reach the advantage progressive that range is widened by this.
Description of drawings
Fig. 1 is the plane graph of piezoelectricity of the present invention plane loudspeaker preferred embodiment;
Fig. 2 is the plane graph of piezoelectric actuator structure preferred embodiment of the present invention;
Fig. 3 is the cutaway view of piezoelectric actuator structure preferred embodiment of the present invention;
Fig. 4 is the acoustic frequency response curve chart of soft brace of the present invention its piezoelectricity plane loudspeaker when using the stretchy nylon net;
Fig. 5 is the cutaway view of another embodiment of bimodal piezoelectric actuator structure kenel of the present invention;
Fig. 6 is provided with the kenel illustration for bimodal piezoelectric patches of the present invention for the interval;
Fig. 7 is the change state diagram of bimodal piezoelectric patches driving voltage phase change of the present invention to acoustic frequency response;
Fig. 8 is that plural frame encloses the enforcement illustration that kenel constitutes for framework of the present invention.
Embodiment
Like Fig. 1,2, shown in 3, the preferred embodiment of piezoelectricity of the present invention plane loudspeaker, this embodiment only supplies the usefulness of explanation, in patent application, does not receive the restriction of this structure; Said piezoelectricity plane loudspeaker comprise:
One framework 10, for hard substrate (can be plastics, metal, timber, pottery etc.) constitutes, being frame encloses kenel; Framework 10 comprises side frame member 11,12, and side frame member 11,12 surrounds a closing structure; And a permeable type group that is formed at side frame member 11,12 central authorities is established space 13.The framework 10 of present embodiment is a rectangular frame, but is not limited to this, also can process polygonal frame, circular frame etc.;
Piezo-activator 20, settings are positioned at two side frame members 11, and this two side frame member 11 is in framework 10 and is oppositely arranged; Respectively this piezo-activator 20 comprises at least two bimodal piezoelectric patches 21, between adjacent two bimodal piezoelectric patches 21 certain intervals is arranged.
Diaphragm 30 (or being called for short vibrating diaphragm) takes place in one vibration; It can be polyimides (Polyimide; PI), polyethylene (polyethylene, PE), polymine (Polyethyleneimine, PEI), PET (Polyethylene terephthalate; PET), Merlon (Polycarbonate; The low rigid macromolecule diaphragm that constituted of high molecule plastic material thin slice such as PC), thickness is most preferred embodiment between 20 μ m to 200 μ m, diaphragm 30 takes place and is located at the permeable type group of this framework 10 and establishes in the space 13 in this vibration; A part of edge of vibration generation diaphragm 30 combines to be fixed in the bimodal piezoelectric patches 21 of piezo-activator 20, between other part at vibration generation diaphragm 30 edges and the upper and lower side frame member 12 of framework 10 spacing distance (joining the W institute sign place of the 1st figure) is arranged then;
As shown in Figure 1, the local location of the side frame member 12 of framework 10 is provided with soft brace 40 (quantity is not limit); Diaphragm 30 takes place and is connected with soft brace 40 in vibration.
It is made that said soft link piece 40 can be materials such as nylon, silica gel, rubber, silicon rubber, and structure can be reticulate body or laminar; These soft link piece 40 thickness are most preferred embodiment between 50 μ m to 200 μ m.
Through the setting of this soft link piece 40, can make vibration take place diaphragm 30 not the middle body of built-in edge can firm engagement in framework 10, but can not influence its vibration.It is long more that the side frame member 12 of said framework 10 is provided with, and the advantage applies of this soft link piece 40 must be obvious more.
Said vibration generation diaphragm 30 is because length direction lacks supports, cause at acoustic frequency response intermediate frequency (～have sound press decline phenomenon near 1kHz).So use this soft link piece 40 except the effect that can avoid the loss of intermediate-frequency section sound press, more can reducing vibration, that diaphragm 30 edges take place is unsettled and produce the problem of noise, can reduce the distortion rate of loudspeaker.
When if soft link piece 40 is used the stretchy nylon net; That the acoustic frequency response of piezoelectricity plane loudspeaker has is as shown in Figure 4 (please join shown in the curve of solid line shape in the table, the curve of dotted line shape is the state when not using this soft link piece then), and its low range partly changes not quite; The sound press of midrange promotes; The sound press of high range slightly reduces, so via the use of soft link piece 40, can make acoustic frequency response that sound press output is more stably arranged.Wherein rectangular vibration generation diaphragm 30 has reduced a vibration frequency, sees through the driving of both sides piezo-activator 20, can produce low-frequency vibration, reaches the effect of bass domain response.
Like Fig. 2, shown in 3; This piezo-activator 20 comprises a pair of mode piezoelectric sheet; At least two parallel strip inner fovea parts 22 of this bimodal piezoelectric patches one side setting; Relatively form an independent cantilever type bimodal piezoelectric patches 21 between each strip inner fovea part 22, constitute piezo-activator 20, that is the piezo-activator 20 of present embodiment is to cut into like kenel as the comb with at least two cantilever type bimodal piezoelectric patches 21.Wherein the thickness of this cantilever type bimodal piezoelectric patches 21 is between 20 μ m to 200 μ m.Piezo-activator 20 1 ends as this comb are fixed on these framework 10 relative two side frame members 11 (please cooperate and consult Fig. 1); Form cantilever structure; The other end then is bonded in vibration diaphragm 30 sides takes place, and tending to act down in voltage to make vibration diaphragm 30 generation vibrations take place and sounding.Can be connected in parallel by the identical circuit of driving voltage polarity between each piezo-activator 20; The displacement that diaphragm 30 produces maximum takes place to drive vibration; Or select specific region actuator polarity of voltage opposite way to connect; To suppress vibration generation diaphragm 30 covibrations of CF, obtain the broadband effect of acoustic frequency response.See through driving voltage polarity and design on the contrary, the covibration that diaphragm 30 takes place in vibration is suppressed, and then produce the acoustic frequency response effect of planarization.
Wherein, this piezo-activator 20 can use bimodal piezoelectric vibration piece, and it can produce a specific resonance frequency with size, makes piezoelectricity plane loudspeaker except that sound that diaphragm 30 produces is taken place by vibration, can have the sound that is produced by piezo-activator 20.
Like Fig. 2, shown in 3, the concrete structure of this cantilever type bimodal piezoelectric patches 21 comprises a sheet metal 211, and these sheet metal 211 two sides are fitted with a piezoelectric patches 212 respectively, and this piezoelectric patches 212 is the circuit kenel that is connected in parallel, and piezoelectric patches 212 surfaces then are combined with electrode 213; This piezoelectric patches 212 can adopt the kenel that piezoelectric ceramic piece or the multiple material thin slice of piezoelectricity are constituted again; And the thickness of this piezoelectric patches 212 is most preferred embodiment between 20 μ m to 200 μ m.
Hold epimere; When said piezo-activator 20 cohered the embodiment of formation for potsherd with sheet metal mutually, the characteristic that rigidity is high made that the sound that produces is main with high range, and the piezoelectricity plane loudspeaker that therefore drive with piezo-activator 20 have bigger high audio sound press; If improve piezoelectricity plane loudspeaker when the acoustic frequency response of high range; Then can use the multiple material of piezoelectricity to make the bimodal piezo-activator, this structure another bimodal piezo-activator 20B structure cutaway view that is as shown in Figure 5, the piezoelectric patches of fitting in its sheet metal 211 two sides 212 substitutes to have the electrical piezoelectricity composite material plate of high pressure; Said piezoelectricity composite material plate is compounded to form by piezoelectric ceramic piece 214 and organic macromolecular material 215 (like resin); Have low rigidity, can reduce the resonance frequency of its piezo-activator 20B, improve the too high phenomenon of high range part sound press when being made into the thin plane loudspeaker; And then whole acoustic frequency response is reached unanimity, reduce the generation of distortion.Electrode as shown in Figure 5 213 directly be bonded on the piezoelectric patches 212 electrical with the high pressure of guaranteeing the multiple material of piezoelectricity.The width ratio of the piezoelectric ceramic piece in the piezoelectric patches 212 of piezoelectricity composite material plate is the content of piezoelectric composition in the piezoelectricity composite material plate; The piezoelectricity of the higher then piezoelectricity composite material plate of this content is higher; Only whole piezoelectricity composite material plate rigidity is also higher, must cooperate the adjustment of loudspeaker acoustic frequency response to change.
As shown in Figure 6; The present invention also can use at least two between the upper and lower at a distance from the formed piezo-activator 20C of bimodal piezoelectric patches 21C that is provided with; But diaphragm takes place in the PEI of fit dimension 100x50x0.1mm3 (being the copolymer of PE and PI) vibration; Its acoustic frequency response state variation is as shown in Figure 7; Curve L1 among the figure, L2, L3 represent to use five same-phases, antiphase of four same-phases, two different driving modes such as antiphase of three same-phases respectively, utilize adjacent bimodal piezoelectric patches driving voltage phase place opposite, can change the result of acoustic frequency response; Owing to contain the bimodal piezoelectric patches of different direction of vibration, the sound press of whole acoustic frequency response drives maximum down with all bimodal piezoelectric patches same-phases.Because the bimodal piezoelectric patches of antiphase is positioned at middle body, so directly the sound press of the low range part of influence changes, it is less that high range is influenced by the driving voltage phase change partly.Wherein use five synchronous bimodal piezoelectric patches to drive down, loudspeaker have high relatively sound press value between 300Hz～20kHz, explain that with this structure of use can form the plane loudspeaker characteristic of wide range.
As shown in Figure 8, this framework 10 includes a plurality of frames and encloses kenel and be formed with a plurality of permeable type groups and establish space 13,13B, and order respectively this permeable type group to establish the space be the different different kenels that are provided with of length, for vibration generation diaphragm 30,30B that different length is set; By this, obtain different acoustic frequency responses with vibration generation diaphragm 30, the 30B that sees through different length, and then reach the effect of wide range.More specifically; Present embodiment is connected to form the slim piezoelectricity plane loudspeaker of sleeve configuration through framework Unit 10 of different length; See through the length specification of the right and left vibration generation diaphragm 30,30B in the variation diagram by this; Can change the acoustic frequency response state of whole piezoelectricity plane loudspeaker, make that plural groups permeable type group is established space 13,13B and vibration generation diaphragm 30,30B constituted has acoustic frequency response more stably, reach the practical function of widening range.
What remark additionally is that these piezoelectricity plane loudspeaker can be applied to electrical equipment such as sound equipment, TV, computer, and utilize its framework set to be positioned in the default installing of the said electrical equipment space.Perhaps, the framework 10 in these piezoelectricity plane loudspeaker can enclose kenel through direct its frame that forms of itself structure of said electrical equipment.
Advantage of the present invention:
1, the piezo-activator that mainly utilizes this majority bimodal piezoelectric patches to be constituted is fixed in vibration the diaphragm both sides takes place; The high deflection that sees through the bimodal piezoelectric patches makes vibration that the sound that diaphragm produces high sound press take place, and cooperates the phase control of different bimodal piezoelectric patches driving voltages, and the vibration behavior of diaphragm takes place with the adjustment vibration; Reduce the covibration that diaphragm takes place in vibration; Make vibration that diaphragm take place and produce more smooth acoustic frequency response characteristic, produce broadband effect, utilize the high strain output characteristic of bimodal piezo-activator again; Diaphragm takes place in the order vibration can produce the bass domain response; Become the excellent structure that has high sound press and low range performance concurrently, and must not use the absorbing material to reduce covibration, avoid sound press to receive the absorbing material to influence reduction; The piezoelectricity plane loudspeaker with bass domain response and broadband effects are formed in global design, and the purposes of building music high-quality loudspeaker in the slimming electronic product is provided.
2, this two side that through this vibration spaced relationship takes place to be between diaphragm and framework sees through the structural design that soft link piece is connected with framework; Can reduce framework the strangulation effect that diaphragm produces is taken place in vibration; Avoid vibrating the limited problem that causes sound press to reduce of diaphragm amplitude that takes place; Fixed vibration because of soft link piece the diaphragm middle body has taken place, can effectively avoid vibrating when the diaphragm vibration takes place because of the not enough vibration that is produced of edge support force, so can reduce noise and problem of dtmf distortion DTMF.
3, be fixed in the structural design on the framework by this piezo-activator system with cantilever type, the vibration displacement amount of the vibration generation diaphragm in the time of can improving driven is to produce high sound press output.
4, include a plurality of permeable type groups by this framework and establish the space for the structural design that diaphragm takes place in the different length vibration is set; Can see through the acoustic frequency response that the length specification that changes the different vibration generation in both sides diaphragm can change whole piezoelectricity plane loudspeaker; Make piezoelectricity plane loudspeaker have acoustic frequency response more stably, reach the practical function of widening range.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; Can expect easily changing or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by said protection range with claim.
Claims (13)
1. piezoelectricity plane loudspeaker comprise:
One framework comprises at least two side frame members, and said side frame member surrounds a frame and encloses kenel, and a permeable type group that is formed at these side frame members central authorities is established the space;
Piezo-activator, settings are positioned at relative two side frame members of this framework, and respectively this piezo-activator comprises at least two
The bimodal piezoelectric patches, said bimodal piezoelectric patches arranged spaced;
Diaphragm takes place in one vibration, is located at the permeable type group of this framework and establishes in the space, and relative two sides that diaphragm takes place in this vibration combine to be fixed in the bimodal piezoelectric patches of said piezo-activator, then is spaced relationship between other relative two sides of this vibration generation diaphragm and the framework.
2. piezoelectricity according to claim 1 plane loudspeaker it is characterized in that being between said vibration generation diaphragm and the framework two sides of spaced relationship, and the soft brace through the local distribution kenel are connected between the framework; Said soft link piece is that materials such as nylon, silica gel, rubber, silicon rubber are made; Said soft link piece is reticulate body or thin slice.
3. piezoelectricity according to claim 2 plane loudspeaker is characterized in that said soft link piece thickness is between 50 μ m to 200 μ m.
4. piezoelectricity according to claim 1 and 2 plane loudspeaker, the thickness that it is characterized in that said vibration generation diaphragm is between 20 μ m to 200 μ m.
5. piezoelectricity according to claim 1 plane loudspeaker; It is characterized in that said piezo-activator comprises a pair of mode piezoelectric sheet; At least two parallel strip inner fovea parts of this bimodal piezoelectric patches one side setting relatively form an independent cantilever type bimodal piezoelectric patches between each strip inner fovea part; Constitute piezo-activator with at least two cantilever type bimodal piezoelectric patches.
6. piezoelectricity according to claim 1 and 2 plane loudspeaker is characterized in that said vibration generation diaphragm is polyimides, polyethylene, polymine, PET, and high molecule plastic material thin slices such as Merlon constitute.
7. piezoelectricity according to claim 1 plane loudspeaker, the thickness that it is characterized in that said bimodal piezoelectric patches is between 20 μ m to 200 μ m.
8. piezoelectricity according to claim 1 plane loudspeaker is characterized in that said cantilever type bimodal piezoelectric patches comprises a sheet metal, and these sheet metal 211 two sides are fitted with a piezoelectric patches respectively, and this piezoelectric patches is the circuit kenel that is connected in parallel.
9. piezoelectricity according to claim 8 plane loudspeaker is characterized in that said piezoelectric patches adopts piezoelectric ceramic piece or the multiple material thin slice of piezoelectricity.
10. piezoelectricity according to claim 8 plane loudspeaker, the thickness that it is characterized in that said piezoelectric patches is between 20 μ m to 200 μ m.
11. piezoelectricity according to claim 1 plane loudspeaker is characterized in that, comprise at least two said frameworks; It is inequality that the permeable type group of each framework is established the length in space, for the vibration generation diaphragm that different length is set; Vibration generation diaphragm through different length obtains different acoustic frequency responses, and then reaches the effect of wide range.
12. piezoelectricity according to claim 1 plane loudspeaker is characterized in that said piezoelectricity plane loudspeaker can be applied to electrical equipment such as sound equipment, TV, computer, and utilize its framework set to be positioned in the default installing of the said electrical equipment space.
13. piezoelectricity according to claim 1 plane loudspeaker; It is characterized in that said piezoelectricity plane loudspeaker can be applied to electrical equipment such as sound equipment, TV, computer; And the framework in these piezoelectricity plane loudspeaker directly forms its frame through constructing of said electrical equipment itself and encloses kenel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100102754A TW201233196A (en) | 2011-01-26 | 2011-01-26 | Piezoelectric planar speaker having plurality of dual-mode piezoelectric plates |
| TW100102754 | 2011-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102625215A true CN102625215A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101431171A Pending CN102625215A (en) | 2011-01-26 | 2011-05-30 | Piezoelectric plane horn |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102625215A (en) |
| TW (1) | TW201233196A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107360487A (en) * | 2016-05-10 | 2017-11-17 | 陈引捷 | Sound-producing device and stereo set |
| CN115914951A (en) * | 2021-09-30 | 2023-04-04 | 华为技术有限公司 | Speaker and electronic equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019103015A1 (en) * | 2017-11-21 | 2019-05-31 | 日東電工株式会社 | Laminate body for forming piezoelectric speaker |
| KR102662671B1 (en) * | 2019-03-29 | 2024-04-30 | 엘지디스플레이 주식회사 | Display apparatus |
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| CN1257399A (en) * | 1998-11-05 | 2000-06-21 | 松下电器产业株式会社 | Piezoelectric loudspeaker |
| CN1390431A (en) * | 1999-07-23 | 2003-01-08 | 数字声能公司 | Flat panel speaker |
| CN2762476Y (en) * | 2004-10-22 | 2006-03-01 | 新生源企业有限公司 | Improved structure of plane piezoelectric speaker actuator |
| CN101262713A (en) * | 2007-03-09 | 2008-09-10 | 谭红 | A plane speaker |
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- 2011-01-26 TW TW100102754A patent/TW201233196A/en unknown
- 2011-05-30 CN CN2011101431171A patent/CN102625215A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257399A (en) * | 1998-11-05 | 2000-06-21 | 松下电器产业株式会社 | Piezoelectric loudspeaker |
| CN1390431A (en) * | 1999-07-23 | 2003-01-08 | 数字声能公司 | Flat panel speaker |
| CN2762476Y (en) * | 2004-10-22 | 2006-03-01 | 新生源企业有限公司 | Improved structure of plane piezoelectric speaker actuator |
| CN101262713A (en) * | 2007-03-09 | 2008-09-10 | 谭红 | A plane speaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107360487A (en) * | 2016-05-10 | 2017-11-17 | 陈引捷 | Sound-producing device and stereo set |
| CN115914951A (en) * | 2021-09-30 | 2023-04-04 | 华为技术有限公司 | Speaker and electronic equipment |
| WO2023051372A1 (en) * | 2021-09-30 | 2023-04-06 | 华为技术有限公司 | Loudspeaker and electronic device |
| CN115914951B (en) * | 2021-09-30 | 2024-06-25 | 华为技术有限公司 | Speaker and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201233196A (en) | 2012-08-01 |
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Application publication date: 20120801 |